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WIKA operating instructions, models CTH63I0 and CTH65I0
EN
14120692.02 01/2019 EN/DE
8. Maintenance, cleaning and recalibration
8. Maintenance, cleaning and recalibration
Personnel:
Skilled personnel
For contact details, please see chapter 1 “General information” or the back
page of the operating instructions.
8.1 Maintenance
These intrinsically safe hand-held thermometers are maintenance-free. Repairs must only
be carried out by the manufacturer.
This does not apply to the battery replacement.
Only use original parts (see chapter 11 “Accessories”).
8.2 Battery replacement
DANGER!
Danger to life from explosion!
Through working in flammable atmospheres, there is a risk of explosion
which can cause death.
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Only use batteries specified by the manufacturer!
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Never use rechargeable batteries in hazardous areas!
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The instruments must not be opened in hazardous areas!
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Do not change the battery while in a hazardous area!
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The battery cover must be closed and locked in place!
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Secure the battery cover with a screw!
Permitted 9 V batteries are:
Battery type
Manufacturer
Battery name
6LR61
Varta
Varta High Energy 4922
Varta
Varta Industrial 4022
Duracell
Duracell Plus Power
1. To change the battery, switch off the instrument and open the battery compartment
at the rear. To do this, unscrew the battery compartment screw, remove it and then
remove the battery cover.
2. Remove the battery and disconnect the connection cable.
3. Connect the new battery to the connection cable and insert it into the battery
compartment.
4. Put the battery cover back on, re-insert the screw into the cover and screw it tightly
down.